単原子光スイッチ: 生物イメージングのための可視光活性化染料への一般的アプローチ
Juan Tang, Michael A Robichaux1, Kuan-Lin Wu
1Verna and Marrs McLean Department of Biochemistry and Molecular Biology , Baylor College of Medicine , Houston , Texas 77030 , United States.
Journal of the American Chemical Society
|August 28, 2019
まとめ
研究者たちは 普通の染料の酸素を硫黄に置き換えて 新しく光活性化できる 光体を開発しました これらのチオケージ fluorophoresは,高度な超解像度顕微鏡のための効率的な光活性化を実現し,生理学的条件下で優れたパフォーマンスを提供します.
科学分野:
- 化学生物学
- 顕微鏡検査
- 分子イメージング
背景:
- 光活性化可能なフッ素は,細胞構造と動力の高解像度イメージングに不可欠です.
- 現存する光活性化可能な探査機は,しばしば激活のために厳しい条件または細胞毒性添加物を必要とします.
研究 の 目的:
- 新しく光活性化できるフッ素染料を作るための一般的かつ簡単な戦略を開発する.
- 超高解像度顕微鏡技術における これらの新しい染料の有用性を実証する.
主な方法:
- 一般的なフッ素ホルダー構造 (チオケージング) に酸素原子を単一の硫黄原子に置き換えて新しいフッ素ホルダーを合成した.
- 理論的な計算を用いて光消火メカニズムを調査した.
- 可視光と空気下での脱硫による光活性化が実証された.
- 開発した探査機を光活性化局所化顕微鏡 (PALM) で適用した.
主要な成果:
- 広範囲にわたる光活性化可能なフッ素染料が成功裏に合成されました.
- チオカルボニル置換は,光誘導による電子移転により,光を効果的に消した.
- 有効な光活性化と光回復は,可視光と空気への曝露で達成された.
- 低活性化光の強度でPALMを用いた高解像度イメージングが達成され,細胞毒性添加物は使用されなかった.
- 細胞構成要素の多色超高解像度イメージングを実証した.
結論:
- チオケージング戦略は,光活性化フッ素素を生成するための多用途かつ効果的な方法を提供します.
- これらの新しい探査機は,特に生物学的条件下で,超高解像度イメージングに重要な利点を提供します.
- 開発されたフッ素光は,高度な細胞イメージングアプリケーションのための有望なツールです.
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